Brake



(No Model.)

0. L. GILBERT.

BRAKE.

No. 397,120. Patented Feb. 5, 1889.

Ira/6707292".

WEI $64666;

46W $2M g m;

UNITED STATES PATENT OFFICE.

OSCAR LOUIS GILBERT, OF ST. PAUL, MINNESOTA.

SPECIFICATION forming part of Letters Patent No. 397,120, dated February5, 1889. Application filed May 19, 1888. Serial No. 274,457. (No model.)

To (6 whom it may concern:

Be it known that I, OSCAR LoUIs GILBERT,

a citizen of the United States, residing at St.

Paul, in the county of Ramsey and State of Minnesota, have invented anew and useful Brake, of which the following is a specification.

My invention relates to improvements in brakes on railroad cars in whichthe cogwheels operate in conjunction with each other; and the object ofmy improvements is to employ the same power which now lies in the mainaxle by means of six cog-wheels to act on two brake-wheels, which areplaced'directly opposite the main wheels. The brake-wheels will move inthe opposite lirection,and when brought in close proximity with the mainwheels (by applying the brake) will cause a friction suiticient to stopthe wheels. Iattain this object by the mechanism illustrated in theaccompanying drawings, in which Figure 1 is a top view of the entiremechanism, the brake not having been applied. Fig. 2 is a verticalsection of a part when the brake is applied, and shows the form of thebrake-hanger. Fig. 3 is a vertical section of a part when the brake isnot applied.

Similar letters refer to similar parts throughout the several views.

Letters A A refer to the main wheels.

B refers to the main axle.

O O show two cog-wheels on the main axle inside of both wheels.

D is an axle, on each end of which is one cogvheel.

E E show the two cog-wheels on axle D.

F refers to an axle, on each end of which is one brake-wheel and insideof same two cogwheels placed directly opposite E E.

G G show the two cog-wheels on axle F.

II II refer to the two brake-wheels on axle F. Axles D and F run throughthe two brakehangcrs, which are illustrated as I I, and these supportaxles D and F on each end.

K, as shown in Fig. 3, represents a staple for the chain. This chainconnects the brakehaug'ers with the brakestalt on the car.

It will be seen that space has been left between cog-wheels O and E, asshown in Fig. 2,

to allow of wear caused by friction on wheels

